The direct method is a method for teaching English that establishes a direct association between the English word, phrase, or idiom and its meaning. It does not allow translation and teaches English using the target language only. Key principles include teaching grammar inductively, focusing on everyday vocabulary and sentences, using realia and demonstrations, and emphasizing listening and speaking skills. Merits include learning English like a first language, thinking in English instead of the native language, and correcting errors as they occur. Demerits include requiring teachers to have native-like fluency and being difficult to implement in large classes.